Liquid-measuring valve



Jan. 3l, 1928.l

J. D. LANGDON LIQUID MEASURING VALVE Filed oct. 2s. 1926 Jo l lill

Patented dan. 3l, i925.

tsaar PATENT orFICE.

JESSE D. LANGDON, F LOS ANGELES, CALIFRNIA.

LIQ'U'ID-MEASURNG VALVE.

Application filed October 28, 19526.

The present invention relates to valves ttor controlling the i'low ol water or other fluid, and aims to provide a novel and improved fluid or liquid measuring valve which, after being opened, will permit a predetermined `flow oi" liquid betere shutting oli the ilow automatically.

Another object is the provision oi such a valve device comprising a novel construction vand assemblage of the component elements, in order that the device will be practical and eliicient in operation.

A further object is the provision olf such ,a valve devicehaving a chamber adapted to be filled with the liquid or fluid when the valve is opened and :from which the liquid bleeds in order to close the valve and shut oil the flow oi liquid aiter a predetermined amount of liquid has passed through the device.

A still further object is to provide a valve hereinafter1 described and claimed, it being understood that changes can be made within the scope of what is claimed, without departing from the spirit oit the invention.

'llhe inventionis illustrated Vin the accompanying drawing, wherein the `ligure is median section oli the device, portionsbeing shown in elevation.

ln carrying out the invention thereis provided a casing 7 having the removable bottom cap 8 provided with a lluid or liquid inlet 9, and the casing has a lateral outlet 10 between its ends. The c: sing is provided with 'a partit-ion 11 between the inlet and outlet provided Vwith an opening 12 and a depending annular flange or lip 13 surrounding said opening and :forming a valve seat projecting in a direction opposite to the flow et liquid throughtlie opening 12. y 'ihe casing 'l' has a top cap` lll and the caps 3 and ll are screwthreaded on the body oit the casing as shown. 'lhe casing may be used in upright position as shown or may be disposed in other positions it required. i y

The valve member or head 15 is in the form of a cap, as shown, and is screwthreaded on the lower end olf a tubular stein Serial No. 144,829.

longitudinal movement within the casing l' f to and Yfrom the sea-t 13. The valve member 15 is provided with an annular groove 19 confronting the seat 13 `and adapted to receive said seat when the valve member is seated. and a gasket 2O of rubber or other suitable material` is disposed within the groove 19 to bear against the seat- 13.

The piston stem 16 and pistonl' have a longitudinal passage 2l extending there through for 'the flow oi liquid to and 'from the chamber of the cylinder 18 above the piston, and the cap-shaped valve member 15 has apertures 22 establishing communication between the inlet 9 and lower end of the passage 21. rlhe stem 16 has a valve seat 23 at its lower end against which a starting `valve 24tis normally seated upwardly to shut oil the flow ot liquid from the inlet 9 into the passage 21. The valve 24 has an upstanding stem 25 slidable Within an upstand- `ing tubular guide 26 carried by an apertured plug 27 screw-threaded Within the lower portion of the passage 21. A. coiled spring is coniined between the valve 2d and mem- A l' ber` 15 to normally seat said valve.

The passage 21 of the piston stem 16 is formed with a shoulder 29 with which a disk 30 is cooperable, said disk being slidable on the valve stem 25 above the shouli# der 29, and the tubular guide 26 serves as a stop or seat to limit the downward movement of the disk 30 and support it above the shoulder 29. By adjusting the plug 27 the clearance between the shoulder 29 and dislr 30 may be adjusted, in order to regulate the bleeding of the liquid from the chamber of the cylinder 18, as will hereinafter more appear. rlhe piston stein 16 is provided below the shoulder 29 and above the partition 11 with bleed opening 31 communicating with the outlet 10 for theV lill) and a member for restricting the flow of liquid from the cylinder to said bleed opening eooperable with said shoulder and adapted to bear against said guide to provide a desired clearance between the last named member and shoulder.

2; A valve device of the character de scribed comprising a easing having an inlet and an outlet and a valve seat between them, a valve member movable against said seat in the direction of liquid flow from the inlet to the outlet, a cylinder in the easing, a piston working the cylinder and having a stem connected to said valve member7 said stem having a passage therethrough for the flow of liquid'under pressure from the inlet into said eylinder to move the piston for opening said valve member, a valve normally closing said passage, said passage having a shoulder and having a bleed opening between said shoul der and valve, a member movable away from and toward said shoulder when the liquid flows through said passage into and out of the Cylinder, respectively, and adjustable means for limiting the movement oft' the lastna-med member toward said shoulder to regulate the flow oi' liquid from the cylinder' to said bleed opening.

In testimony whereof l hereunto affix my signature.

JESSE D. LANGDON. 

